Gearing



' R. S. ZEITLER Nov. 24 1925.

GEARING Filed Jan. 23. 1925 2 Sheets-Sheet Nov. 24, 1925.

1,562,671 R. s. ZEITLER GEARING Filed Jan. 23, 1925 2 Sheets-Sheet 2Patented Nov. 24, 1925.

tlNiTED STATES RAYMOND S. ZEEITLER, OF CHICAGU, 115141151013.

GEARING.

Application filed January To all lliilOlilt-Z' may concern:

Be it known that I, RAYMOND S. Znrrnnu, a citizen of the United States,residing at Chicago, in the county of Cook and State oi": Illinois, haveinvented a new and useful li'npi'ovement in Gearing, of which thefollowing is a specification.

My present invention relates to the provision of gearing mechanism foroperating hand brakes on railroad cars. Such brake operation is requiredin emergency situations and also for switching when the train pipecarrying the air is disconnected. The operative limit of movement ofbraking structures in use on railroad trains is rigidly regulated, acertain definite extent of move ment for taking up play being specifiedbcltore the brakes commence to set, and a certain further definiteextent of movement is specifiedin which the brakes must be set. Theusual and most ordinary extent of play is some 6 inches, and 12 inchesor movement isailowed for setting the brakes. In amechanism for the handoperation of the brakes but little power is necessary for taking up theplay, and it is desirable to be able to take up the play rapidly; butwhen the brakes are being set increased power is necessary, and it isdesirable to have at command a considerable additional power. It has,therefore, been my object to provide mechanism for operating the handbrakes which, with a continuous movement of the ham brake wheel, willrapidly take up the play, and when the play has been taken up willafford considerable additional power for setting the brakes. I have hada further object to provide such facilities in a compact and sturdystructure of dependable operation.

I have secured the aforesaid objects by means of the mechanismillustrated in the accompanying drawings in which,

Fig. 1 is a central vertical section through the gear train, drum andhousing;

Fig. 2 is a plan oi the gear train, the top of the housing beingremoved;

Fig. 3 is a section of line 33 of Fig. 1 showing the segmental gears foreltecting the take up; and

Fig. a is a section on line 47*4: of Fig. 1 showingthe pinion andsegmental gear cooperating therewith for changing the gear ratio.

Fig. 5 is a tragmental elevation showing 23, 1925. Serial No. 4,257.

the relation of coi'i'iplete gear 7 and segmein tal gear 8.

lhroughout the several drawings 1 have played the same referencecharacters to ignate similar parts. The mechanism is mounted in anysuitable container, for instance, a cage container, such as is shown,comprising top and bottom plates A and l3 ith right angled flanges Aant. B, which are bolted together.

Pinned, or otherwise fixedly secured to the brake mast or shaft 5 is acomplete or entire pinion 6, the hub of which is jour naled in the topplate A. This pinion 6 meshes with an enlarged and also complete pinion7 formed upon the upper portion of the periphery of the gear block uponwhich all the intermediate gear elements are formed, which gear blockrotates upon a pin em de C extending between plates A and B of thehousing. The teeth of a portion of the pinion 7 are vertically extendedto form a segmental or incomplete gear, as at 8. This segmental gear 8meshes with a co-operating segment 9 of a radius equal to that of thegear 6, provided upon the top 01 a gear block 10-, which gear block isjournaled to rotate upon the brake mast or rod 5 just below the pinion6. Integral with and de pending from the central portion of the disccarrying the gears 7 and 8 is a pinion 11 concentric with the gears 7and 8 but of smaller radius. Provided upon the periphery of the block 10is a segmental gear 12 which meshes with the pinion 11. The segmentalgears 8 and 9 are so circumferentially related to the segmental gear 12that when the segmental gears 8 and 9 pass into mesh the segmental gear12 passes out of mesh with the pinion 11, and vice versa.

Provided upon the lower portion of the block 10 is a pulley or drum 13with radial lugs 14 between which lugs is secured the end oi the brakechain by means of a bolt 15, and around which drum the brake chain iswound and unwound as the gears are caused to function by the rotation ofthe brake mast or shaft. Upon the lower face of the drum or pulley 13 isa reduced extension 16 which is journaled in the lower housing plate B.

The operation of my device is as follows:

Upon the initial rotation of the brake mast or shaft 5 the gear 6co-acting with the gear 7 rotates the segmental gear 9 through theelongated segmentally disposed teeth 8. This causes the rotation of thedrum 13 at the same speed and in the same direction with the rotation ofthe brake mast or shaft. As the segments 8 and 9 go out of mesh, thepinion 11 of relatively small radius, engages with the segment 12 ofrelatively large radius, thereby developing a much diminished speed andincreased power for the turning of the pulley or drum.

It is obvious that the radiuses of the gears may be altered and also thecircumferential extent of the segmental gears so that the proportions oftake up and the power ratio can be varied as may be desired in anyparticular application. t will also be seen that no particularmanipulation is required to cause the functioning of my device as themere turning of the brake mast or shaft will cause the successiveengagement and disengagement of the respective segmental gears.

Havin described my invention what I claim as new and desire to secure byLetters Patent, is 2- 1. A mechanism for ope 'ating hand brakes or thelike, comprising a drive shaft. a gear fixedly secured thereto, a drumand a pair of complementary segmental gears fixed with relation to eachother and journaled upon the drive shaft, a gear block rotatably mountedand provided with two complete gears and a segmental gear for engagingsaid gear fixed to the drive shaft and the segmental gears rotatablethereon.

2. A mechanism of the kind described comprising a drive shaft, a gearfixedly secured thereto, two complementary segmental driven gears and apulley fixedly secured with relation to each other, and' pivotedconcentrically with said drive shaft, and an independently pivoted gearblock provided with two complete and an intermediate segmental gearmeshing with the gears aforesaid.

3. A mechanism of the kind described comprising a drive shaft, a gearfixedly secured thereto, two complementary segmental driven gears and apulley fixedly secured with relation to each other, and an independentlypivoted gear block provided with two complete and an intermediatesegmental. gear meshing with the gears aforesaid.

at. A mechanism of the kind described comprising a drive shaft, a gearfixed thereto, two segmental complementary gears and a driven memberconcentrically disposed and fixedly related to each other, and threegears fixedly related to each other, one of which is a segmental gear,disposed to maintain constant mesh with said first mentioned gear and tosecure the progressive engagement of the complementary segmental gears.

5. A mechanism of the kind described comprising a drive shaft, a gearfixed thereto, two segmental complementary gears and a driven memberconcentrically disposed and fixedly related to each other, and threegears fixedly related to each other and co-actively related respectivelyto said drive shaft gear and said complementary segmental gears.

RAYMOND S. ZEITLER.

